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MIL-DTL-38999 Series II Circular Connectors

Amphenol Aerospace MIL-DTL-38999 Series II consists of subminiature circular connectors designed to offer high reliability and high contact density with maximum weight and space savings. Amphenol MIL-DTL-38999 Series II Circular Connectors feature a lightweight, space-saving design, 3-point bayonet lock system, and error-proof alternate positioning. Amphenol Aerospace MIL-DTL-38999 Series II Circular Connectors are ideally suited for industrial applications, military and commercial air, military vehicles, missiles and ordnance, and C4ISR.

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Part #

Circular MIL Spec Connector 4P SZ 12 PLUG CBL MNT SKT

MS27473T12B4S
Amphenol Aerospace
1: $75.66
100Expected 22/2/2027

Mfr. Part No.
MS27473T12B4S

Mouser Part No
654-MS27473T12B4S

Amphenol Aerospace

Circular MIL Spec Connector 4P SZ 12 PLUG CBL MNT SKT

Datasheet

100Expected 22/2/2027

$75.66

$67.66

$65.99

$64.52

$62.07

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 5P SZ 14 PLUG CBL MNT PIN

MS27473T14B5P
Amphenol Aerospace
1: $119.52
87Expected 5/11/2026

Mfr. Part No.
MS27473T14B5P

Mouser Part No
654-MS27473T14B5P

Amphenol Aerospace

Circular MIL Spec Connector 5P SZ 14 PLUG CBL MNT PIN

Datasheet

87Expected 5/11/2026

$119.52

$107.62

$93.50

$75.92

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 55P SZ 16 PLUG CBL MNT PIN

MS27473T16B35PA
Amphenol Aerospace
1: $131.88
94Expected 1/12/2026

Mfr. Part No.
MS27473T16B35PA

Mouser Part No
654-MS27473T16B35PA

Amphenol Aerospace

Circular MIL Spec Connector 55P SZ 16 PLUG CBL MNT PIN

Datasheet

94Expected 1/12/2026

$131.88

$109.90

$91.30

$88.67

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 55P SZ 16 PLUG CBL MNT SKT

MS27473T16B35S-LC
Amphenol Aerospace
1: $127.27
3In Stock
Factory Special Order

Mfr. Part No.
MS27473T16B35S-LC

Mouser Part No
654-MS27473T16B35SL

Factory Special Order

Amphenol Aerospace

Circular MIL Spec Connector 55P SZ 16 PLUG CBL MNT SKT

Datasheet

3In Stock

$127.27

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 26P SZ 16 PLUG CBL MNT SKT

MS27473T16F26S
Amphenol Aerospace
1: $143.81
5In Stock
Factory Special Order

Mfr. Part No.
MS27473T16F26S

Mouser Part No
654-MS27473T16F26S

Factory Special Order

Amphenol Aerospace

Circular MIL Spec Connector 26P SZ 16 PLUG CBL MNT SKT

Datasheet

5In Stock

$143.81

View

Min.: 1
Mult.: 1

Circular MIL Spec Connector 55P SZ 16 PLUG CBL MNT PIN

MS27473T16F35P
Amphenol Aerospace
1: $202.04
63Expected 1/12/2026

Mfr. Part No.
MS27473T16F35P

Mouser Part No
654-MS27473T16F35P

Amphenol Aerospace

Circular MIL Spec Connector 55P SZ 16 PLUG CBL MNT PIN

Datasheet

63Expected 1/12/2026

$202.04

$175.58

$153.91

$150.43

$92.41

Min.: 1
Mult.: 1

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT SKT

MS27473T18B32P
Amphenol Aerospace
1: $190.66
4In Stock
Factory Special Order

Mfr. Part No.
MS27473T18B32P

Mouser Part No
654-MS27473T18B32P

Factory Special Order

Amphenol Aerospace

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT SKT

Datasheet

4In Stock

$190.66

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT PIN

MS27473T18B32P-LC
Amphenol Aerospace
1: $121.91
8In Stock
Factory Special Order

Mfr. Part No.
MS27473T18B32P-LC

Mouser Part No
654-MS27473T18B32PL

Factory Special Order

Amphenol Aerospace

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT PIN

Datasheet

8In Stock

$121.91

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT SKT

MS27473T18B32S
Amphenol Aerospace
1: $159.64
99Expected 15/9/2026

Mfr. Part No.
MS27473T18B32S

Mouser Part No
654-MS27473T18B32S

Amphenol Aerospace

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT SKT

Datasheet

99Expected 15/9/2026

$159.64

$145.29

$131.57

$103.96

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 66P SZ 18 PLUG CBL MNT PIN

MS27473T18B35P
Amphenol Aerospace
1: $165.59
19Expected 15/9/2026

Mfr. Part No.
MS27473T18B35P

Mouser Part No
654-MS27473T18B35P

Amphenol Aerospace

Circular MIL Spec Connector 66P SZ 18 PLUG CBL MNT PIN

Datasheet

19Expected 15/9/2026

$165.59

$96.10

$94.66

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 66P SZ 18 PLUG CBL MNT SKT

MS27473T18F35S
Amphenol Aerospace
1: $188.71
100Expected 1/12/2026

Mfr. Part No.
MS27473T18F35S

Mouser Part No
654-MS27473T18F35S

Amphenol Aerospace

Circular MIL Spec Connector 66P SZ 18 PLUG CBL MNT SKT

Datasheet

100Expected 1/12/2026

$188.71

$174.31

$139.89

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 6P SIZE 8 SOCKET CABLE MOUNT PLUG

MS27473T8A35S
Amphenol Aerospace
1: $74.65
97On Order

Mfr. Part No.
MS27473T8A35S

Mouser Part No
654-MS27473T8A35S

Amphenol Aerospace

Circular MIL Spec Connector 6P SIZE 8 SOCKET CABLE MOUNT PLUG

Datasheet

97On Order

$74.65

$66.53

$62.30

$58.66

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 6P 8B SIZE STRAIGHT PLUG SKT

MS27473T8B35S-LC
Amphenol Aerospace
1: $114.23
1In Stock

Mfr. Part No.
MS27473T8B35S-LC

Mouser Part No
654-MS27473T8B35S-LC

Amphenol Aerospace

Circular MIL Spec Connector 6P 8B SIZE STRAIGHT PLUG SKT

Datasheet

1In Stock

$114.23

$106.68

$88.18

$86.26

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 6P SIZE 8 STRAIGHT PLUG SOCKET

MS27473T8F35S
Amphenol Aerospace
1: $142.15
128On Order

Mfr. Part No.
MS27473T8F35S

Mouser Part No
654-MS27473T8F35S

Amphenol Aerospace

Circular MIL Spec Connector 6P SIZE 8 STRAIGHT PLUG SOCKET

Datasheet

128On Order

$142.15

$121.53

$109.44

$86.67

View

Min.: 1
Mult.: 1

Circular MIL Spec Connector 13P SZ 10 PLUG CBL MNT PIN

MS27484T10B35P
Amphenol Aerospace
1: $132.26
100Expected 1/12/2026

Mfr. Part No.
MS27484T10B35P

Mouser Part No
654-MS27484T10B35P

Amphenol Aerospace

Circular MIL Spec Connector 13P SZ 10 PLUG CBL MNT PIN

Datasheet

100Expected 1/12/2026

$132.26

$103.31

$97.92

$93.88

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 22P SZ 12 PLUG CBL MNT PIN

MS27484T12B35P
Amphenol Aerospace
1: $146.83
90Expected 1/12/2026

Mfr. Part No.
MS27484T12B35P

Mouser Part No
654-MS27484T12B35P

Amphenol Aerospace

Circular MIL Spec Connector 22P SZ 12 PLUG CBL MNT PIN

Datasheet

90Expected 1/12/2026

$146.83

$135.95

$133.05

$130.57

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 8P SIZE 12 STRAIGHT PLUG PIN

MS27484T12F8P
Amphenol Aerospace
1: $160.92
98Expected 11/11/2026

Mfr. Part No.
MS27484T12F8P

Mouser Part No
654-MS27484T12F8P

Amphenol Aerospace

Circular MIL Spec Connector 8P SIZE 12 STRAIGHT PLUG PIN

Datasheet

98Expected 11/11/2026

$160.92

$142.51

$94.48

Min.: 1
Mult.: 1

Circular MIL Spec Connector 37P SZ 14 PLUG CBL MNT PIN

MS27484T14B35P-LC
Amphenol Aerospace
1: $139.03
8In Stock

Mfr. Part No.
MS27484T14B35P-LC

Mouser Part No
654-MS27484T14B35PL

Amphenol Aerospace

Circular MIL Spec Connector 37P SZ 14 PLUG CBL MNT PIN

Datasheet

8In Stock

$139.03

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 55P SZ 16 PLUG CBL MNT PIN

MS27484T16B35P
Amphenol Aerospace
1: $161.16
99Expected 5/1/2027

Mfr. Part No.
MS27484T16B35P

Mouser Part No
654-MS27484T16B35P

Amphenol Aerospace

Circular MIL Spec Connector 55P SZ 16 PLUG CBL MNT PIN

Datasheet

99Expected 5/1/2027

$161.16

$146.09

$144.62

$143.18

$141.75

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector Plug 6P SZ 16 SOC

MS27484T16B6S
Amphenol Aerospace
1: $172.15
92Expected 18/11/2026

Mfr. Part No.
MS27484T16B6S

Mouser Part No
654-MS27484T16B6S

Amphenol Aerospace

Circular MIL Spec Connector Plug 6P SZ 16 SOC

Datasheet

92Expected 18/11/2026

$172.15

$157.00

$150.95

$145.91

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 6P SZ 8 CBL MNT SOC

MS27484T8F35S
Amphenol Aerospace
1: $158.85
89Expected 23/10/2026

Mfr. Part No.
MS27484T8F35S

Mouser Part No
654-MS27484T8F35S

Amphenol Aerospace

Circular MIL Spec Connector 6P SZ 8 CBL MNT SOC

Datasheet

89Expected 23/10/2026

$158.85

$145.64

$134.53

$119.27

$100.93

Min.: 1
Mult.: 1

Circular MIL Spec Connector 22P SZ 12 SOC WALL MNT

MS27497T12F35S
Amphenol Aerospace
1: $112.54
94Expected 20/11/2026

Mfr. Part No.
MS27497T12F35S

Mouser Part No
654-MS27497T12F35S

Amphenol Aerospace

Circular MIL Spec Connector 22P SZ 12 SOC WALL MNT

Datasheet

94Expected 20/11/2026

$112.54

$100.04

$96.19

$92.98

$87.84

Min.: 1
Mult.: 1

Circular MIL Spec Connector 18P SZ 14 SOC WALL MNT

MS27497T14B18S
Amphenol Aerospace
1: $114.25
94Expected 23/9/2026

Mfr. Part No.
MS27497T14B18S

Mouser Part No
654-MS27497T14B18S

Amphenol Aerospace

Circular MIL Spec Connector 18P SZ 14 SOC WALL MNT

Datasheet

94Expected 23/9/2026

$114.25

$101.56

$97.65

$94.38

$89.18

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 37P FM SZ 14 SOC WALL MNT

MS27497T14F35S
Amphenol Aerospace
1: $134.49
90Expected 23/10/2026

Mfr. Part No.
MS27497T14F35S

Mouser Part No
654-MS27497T14F35S

Amphenol Aerospace

Circular MIL Spec Connector 37P FM SZ 14 SOC WALL MNT

Datasheet

90Expected 23/10/2026

$134.49

$122.64

$117.93

$113.98

$107.70

Min.: 1
Mult.: 1

Circular MIL Spec Connector 55P SZ 16 SOC WALL MNT

MS27497T16B35S
Amphenol Aerospace
1: $160.48
100Expected 23/10/2026

Mfr. Part No.
MS27497T16B35S

Mouser Part No
654-MS27497T16B35S

Amphenol Aerospace

Circular MIL Spec Connector 55P SZ 16 SOC WALL MNT

Datasheet

100Expected 23/10/2026

$160.48

$146.34

$140.71

$136.01

$128.51

Min.: 1
Mult.: 1

No